based on the work of "Spirit Communicator" James Van Praagh, who is co-executive producer and regularly updated a blog about the show through LivingTV. The stories are also said to be based in part on the work of "Spirit Communicator" Mary Ann Winkowski. Development of the show dates back to at least two years before its premiere. The show was produced by Sander/Moses Productions in association with CBS Television Studios (originally Paramount Network Television in season one and ABC Studios (originally Touchstone Television in the first two seasons) and CBS Paramount Network Television in seasons two and three). The show was filmed on the Universal Studios back lot in Los Angeles. One area on the lot is Courthouse Square from the Back to the Future trilogy, though it has been drastically modified to depict Grandview. For example, the clock tower in Back to the Future'' has been completely covered up. Cast and crew members believe that the set gets visits from real spirits. Sound effects were completed at Smart Post Sound. Visual effects for the pilot and some season one episodes were completed at Flash Film Works. Visual effects for nearly the entire series were created at Eden FX. Creator John Gray grew up in Brooklyn, New York, which is not far from Grandview-On-Hudson, west of the Hudson River. Piermont is often referenced in episodes as the neighboring town, which is accurate to real life as Grandview-On-Hudson is actually located just north of Piermont. Professor Rick Payne worked in the fictional "Rockland University," and perhaps not coincidentally, the actual Grandview, New York is a village located in Rockland County, New York. Cast Jennifer Love Hewitt as Melinda Gordon (22 episodes) David Conrad as Jim Clancy (22 episodes) Aisha Tyler as Andrea Marino (1 episode) Camryn Manheim as Delia Banks (21 episodes) Episodes References General references 2006 American television seasons 2007 American television seasons 2